Boom -- I got it.

I used helm's emacs-helm.sh and got to the "minimal" config necessary
to run helm.  The org-set-tags-command worked correctly when running
in the minimal config.

I moved some initialization code from my org-mode-config.org file
to my init.el file and I got helm to work with org-set-tags-command
correctly!

init.el

(setq package-load-list '((helm-core t) (helm t) (async t) (popup t)))
(package-initialize)
(require 'helm-config)
(helm-mode 1)






On Fri, Jul 26, 2019 at 4:47 PM Nathan Neff <nathan.neff@gmail.com> wrote:

> Hello all,
>
> I would like to use helm to select tags for my headings,
> and I'm having a tough time getting something to work.
>
> I would like the following behavior:
>
> 1) org-set-tags-command would show a list of all tags
> in my agenda files using the helm interface
>
> 2) I could set one tag for each call to org-set-tags-command.  I've
> seen posts that want to be able to multi-select tags, but I don't want to
> over-complicate things.
>
> Currently, I'm using helm-core 2019-05-27 and org-mode
> 9.2.3
>
> I have this set:
> ;; Always offer all agenda tags in capture and in normal operations
> (setq org-complete-tags-always-offer-all-agenda-tags 't)
>
> org-set-tags-command works fine if a headline does *not* have a tag.  I
> get helm
> mode with all of the tags from my agenda-files shown.  However, after I
> assign
> a tag to a headline, I no longer see the list of tags when I call
> org-set-tags-command.  Instead I see: "Tags: :currtag:" prompt and no
> suggestions from helm.  If I remove the tag, then my
> tags show up again in helm, but selecting another tag will then *replace*
> the current tag
> which is not what I want.
>
> Any ideas?
>
> I have removed all #+TAGS: "fast selection" from my org-files.
>
> I have this code on my machine, but it appears not to be working:
> https://github.com/emacs-helm/helm/pull/1439
>
> Thanks,
> --Nate
>
>